Constitutive behavior of Ni-Ti shape memory alloy under hot compression

被引：0

作者：

江树勇 ^{[1
]}

张艳秋 ^{[1
]}

赵亚楠

唐明 ^{[1
]}

易文林 ^{[2
]}

机构：

[1] Industrial Training Centre,Harbin Engineering University

[2] College of Materials Science and Chemical Engineering,Harbin Engineering University

来源：

JournalofCentralSouthUniversity | 2013年 / 20卷 / 01期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

Ni-Ti alloy; shape memory alloy; constitutive behavior; microstructural evolution; hot deformation;

D O I：

暂无

中图分类号：

TG139.6 [];

学科分类号：

080502 ;

摘要：

Constitutive behavior of nickel-titanium shape memory alloy (Ni-Ti SMA) under hot deformation was investigated by means of the compression tests and the linear fitting method. Based on the true stress-strain curves of Ni-Ti SMA under compression at the strain rates of 0.001-1s -1 and at the temperatures ranging from 600 to 1 000℃, the constitutive equation of Ni-Ti SMA with respect to the Zener-Hollomon parameter was established according to the high stress level and the low stress level at various temperatures so as to more accurately describe the deformation behavior of Ni-Ti SMA during hot working. Dynamic recovery and dynamic recrystallization of Ni-Ti SMA occur under hot compression, which lays the theoretical foundation for understanding the constitutive behavior of Ni-Ti SMA.

引用

页码：24 / 29

页数：6

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